5^541-1

Open composite · C324

NFS Planning

GNFS Murphy estimate: 3.60e-22
SNFS Murphy raw: 1.10e-17
SNFS Murphy normalized (deg 6): 6.89e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.25125

Identifiers

Target expression: 5^541-1
Target link: FactorDB page
Target ID: 1000000000018437259
Target changed: Before 6/8/2026
Parent query: Same as target
Parent ID: -
Cofactor token: C324
Imported: Jun 07, 2026, 01:42 AM UTC

Raw pmain126 Factorization

(1) 3154031.2932027426874784495989.341665684178117101724490529. C324

SNFS Polynomial

Polynomial

Degree: 7
Raw Murphy: 1.10e-17
Normalized (deg 6): 6.89e-18
Skew: 1.25125
Selected: Best

n: 109920072608823673055985643390171104971042449945179322886259576635910411964897442755953746640740657360703818813403360875018994392328672720351133485414080827591086072933957304065995674155907953372178220832373897325313110668618954349175728977197447586613918712123251934687330634560296786202128087948738967246885754526238931471
# 5^541-1, difficulty: 378.14, skewness: 1.58
# cost: 4.46958e+22, est. time: 21283719.11 GHz days (not accurate yet!)
# Optimized skew: 1.25125 Murphy: 1.10e-17
skew: 1.25125
c7: 1
c0: -25
Y1: -661744490042422139897126953655970282852649688720703125
Y0: 1
type: snfs